Media-aware browsing labels and filters for videos, audio, images, and books

[GarbaJohnAshifa]

This PR makes the browsing UI less book-only and adds direct media-type browsing.

What changed:

-Added media context helpers to detect dominant library media type and build format-based filters.
-Added media-type routes and sidebar entries for: videos, audios, images, books
-Updated list and section titles to be media-aware (for example Hot/Top Rated/Read/Unread/Archived).
-Updated wording: Discover (Random Books) -> Discover, Book Details -> Content Details
-Updated detail page media action blocks so audio/video/image actions can all appear when available.
Files touched:
cps/constants.py
cps/media_context.py (new)
cps/render_template.py
cps/web.py
cps/templates/detail.html
cps/templates/index.html
cps/templates/layout.html

[GarbaJohnAshifa]

@tim-moody Could you please review this?

[chapmanjacobd]

This PR looks good

How timely! I'm actually working on something that is a bit similar to this. I don't know if it can completely replace Calibre-Web but maybe someday. It has Media Type filters too:

https://github.com/chapmanjacobd/discotheque

[holta]

@deldesir @tim-moody would you have the time to review this @GarbaJohnAshifa's PR here?

[tim-moody]

On a Debian 13 VM
I set the following in local vars and ran iiab-install:

calibreweb_install: True
calibreweb_enabled: True
calibreweb_repo_url: https://github.com/langdoc-minawao/calibre-web
calibreweb_version: feature/adaptive-media-ui

Ansible completed without complaints (except for the known problem of dnsmasq not installing until after a reboot)

As Admin I downloaded a youtube video and was able to like or not and make comment (looks like you have to exit the comment field or the Post button doesn't do anything)

I uploaded an image (note that url is /books for all content) and only filled in Author and rating.

Both content was visible to a Guest

As a Guest I made a comment on the image and got the following:

The mouse over text for the sort buttons all say book, regardless of content.

Guest viewed both the image and the video, but neither shows up in Viewed Videos or Images, and the caption says Read, not Viewed.